bannerCommenter: Make Banner Comments with a Consistent Format

A convenience package for use while drafting code.
It facilitates making stand-out comment lines decorated with
bands of characters. The input text strings are converted into
R comment lines, suitably formatted. These are then displayed in
a console window and, if possible, automatically transferred to a
clipboard ready for pasting into an R script. Designed to save
time when drafting R scripts that will need to be navigated and
maintained by other programmers.